docs: Resolve many typos in the English docs (#20088)

* docs: Fix typo in ONNX parser help: 'tolerence' => 'tolerance'

* docs: Resolve many typos in the English docs

Typos found via 'codespell ./docs/source/en'

docs/source/en/model_doc/splinter.mdx

@@ -41,7 +41,7 @@ Tips:
 - If you plan on using Splinter outside *run_qa.py*, please keep in mind the question token - it might be important for
   the success of your model, especially in a few-shot setting.
 - Please note there are two different checkpoints for each size of Splinter. Both are basically the same, except that
-  one also has the pretrained wights of the QASS layer (*tau/splinter-base-qass* and *tau/splinter-large-qass*) and one
+  one also has the pretrained weights of the QASS layer (*tau/splinter-base-qass* and *tau/splinter-large-qass*) and one
   doesn't (*tau/splinter-base* and *tau/splinter-large*). This is done to support randomly initializing this layer at
   fine-tuning, as it is shown to yield better results for some cases in the paper.